Rotary engine.



No. 807,421. PATENTED DEC. 12, 1905.

A. S. DICKISON.

ROTARY ENGINE.

APPLICATION FILED JUNE 7,1904.

4 SHEETS-SHEET 1.

No. 807,421. PATENTED DEG.12,1905.

A. s. DIOKISON. I

ROTARY ENGINE.

APPLIGATION FILED JUNE 7, 1904.

4 SHEETS-SHEET 2.

War-MM D w I PATENTED DEC. 12, 1905. A. S. DIGKISON.

ROTARY ENGINE.

APPLIUATION FILED JUNE 7, 1904.

I 4 SHEETS-SHEET 3.

No. 807,421. PATENTED DEC. 12, 1905. A. s. DIGKISON.

ROTARY ENGINE.

APPLIOATION FILED JUNE 7. 1904.

4 SHEETSSHBET 4.

UNTTED STATES PATENT .QFFTQE ROTARY ENG I NE.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed June '7, 1904. Serial No. 211,463.

To all whom, it may concern:

Be it known that l, ADAM S. DIOKISON, a citizen of the United States, residing at VVoodbury, Gloucester county, State of New Jersey, have invented a new and useful Improvement in Rotary Engines, of which the following is a specification.

My invention relates to rotary engines. It comprises means for using the fluid expansively, for reducing friction to a minimum, for providing a simple cut-off, and for preventing vibration or strain by giving a large number of impulses to each revolution of the shaft.

It further consists of novel features of construction, all as will be hereinafter fully set forth.

Figure 1 is an end view of an engine em bodying my invention, certain parts being removed for the sake of clearness. Fig. 2 is a top plan view of the same. Fig. 3 is a section through the line y y, Fig. 2. Fig. 4 is a horizontal section through line w m, Fig. 1. Fig. 5 is an end view similar to that shown in Fig. 1, but on a reduced scale and with the valve mechanism removed for clearness of illustration.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, 1 designates a casing consisting of a base 2, cylinder 3, heads 4 and 5, and transverse partition 6. Mounted in suitable bearings in the heads4 and 5 is a shaft 7 ,on which is mounted within. the chambers 8 and 9, respectively, carriers 10 and '11. These are of triangular cross-section, securely keyed to the shaft 7, and provided with longitudinally-segmental grooves 12, as clearly shown in Fig. 3. Within the grooves 12 are pistons 13 of cylindrical form, antifrictionally mount- 'ed by means of roller-bearings 14. Extending laterally at each side of the chambers 8 and 9 are recesses 15 16 17 18, respectively. These are connected with lateral chambers 19 20 by means of ports 21, 22, 23, and 24. Vithin the chambers 19 and 20 are valvesleeves 26, respectively, extending through the front wall 5 of the cylinder and having secured at their free ends gear-wheels 27 and 28. On the free end of the shaft 7 is a similar gear 29, connected by idlers 3O 31 with the gears 27 and 28. In each of the valve-sleeves chamber 9.

- sleeves 25 and 26 are cut-off sleeves 34 35,

each provided with ports 36 37, adapted to register with the ports opening into the chamber 8, and with similar ports 38 39, adapted to register with those opening into the chamber 9. The cut-off sleeves 34 and are provided at their free end with polygonal heads 40 41, respectively, which form stuffing-boxes by which the sleeves are joined to stationary steam-inlet pipes 42 43. On the polygonal heads 40 and 41 are secured collars 44 45, connected by links 46 47 to a lever 48. These last parts are shown in Fig. 5 of the drawings.

Playing within the recesses 15 and 16, respectively, are roller-abutments 49 and 50, supported when in their extreme position on roller-bearings 51. Ports 52 and 53 connect the recesses 15 and 16 with the chambers 8 and 9, the ports being controlled by valves 54, the stems 55 of which project through the heads 5 of the cylinder and are united by links 56 to a hand-lever 57, pivoted upon the shaft 7.

Within the chamber 8, intermediate of the recesses 15 and 16, are exhaust-ports 58 and 59. The port 58 is connected, by means of a steampipe 60, with the rear end of the sleeve 25, the port 59 being connected in a similar manner, by means of the pipe 61, with the rear end of the sleeve 26; As clearly shown in Fig. 4 of the drawings, the sleeves 25 and 26 are divided midway of their length by solid partitions 62 63, respectively. The chamber 9 is provided with similar exhaust-ports 64, which may be open to the atmosphere or connected to a condenser, as desired. Suitable oil ports and grooves, as 65 66, may be provided for the lubrication of the pistomcarriers 10 and 11.

The operation is as follows: Steam admitted to the inlet-pipes 42 and 43 will pass through the ports 36, 31 and 21 into the recess 15 and through the ports 37 32, and 22 into the recess 16, respectively. The steam in the recess 15 will act to force inward the rolling abutment 49, so that the steam will pass through the port 52 into the chamber 8, as clearly shown by the arrows in Fig. 3, after which the steam from the recess 16 will also pass through the port 52 into the chamber 8. The effect of these impulses 58 will be to rotate the carrier 10 and shaft 7 in the direction of the arrow, Fig. 3.

The valve-sleeves 25 and 26 are set to admit steam alternately to the recesses 15 16 through the three ports 31 32, and 33 successively.

It will be seen that six impulses are given to the piston-carrier 10 at each complete rotation thereof.

It will be noted that the valve-sleeves and 26 are connected, by means of their gearwheels 27 28 and the intermediate gears 30 31, with the gear 20 of the shaft 7, so that each rotation of the shaft produces one rotation of each of the valve-sleeves.

The exhaust-steam which passes from the recess 15 after doing its work in the highpressure chamber 8 passes through the pipe 50 to the rear inlet 67 of the sleeve 25 and thence through the ports 38, 31 and 23 into the low-pressure chamber 9. In the same Way the steam exhausting at 59 is led through the passage 51 to the inlet 8, whence it passes to the chamber 9 atthe right of the drawing, Fig. 4. It is obvious that the low-pressure piston-carrier 11 is rotated in precisely the manner described in connection with the carrier 10.

It will be seen that the contact of the abutments 49 and 50 against the sides of the carriers 10 and 11 is a rolling one and that this is true of the contact of the pistons 13 in their hypocycloidal movement in the chambers 8 and 9. In this way friction is reduced to a negligible quantity.

When it is desired to reverse the movement of the engine, the shifting of the lever 57 will act' through the links 56 to close the valves 54 in the ports 52 (shown in Fig. 3 of the drawings) and to open the similar valves in the ports 53,.

As shown in the drawings, the cut-off sleeves 34 and 35 are set so that their ports 36 and 37 register exactly with the ports 21 and 22 in the recesses 15 and 16. By shifting the lever 48 (shown in Fig. 5 of the drawings) the heads 40 41 will be turned, through the movement of the collars 44 45 and links 46 47, to rotate the sleeves 34 35. The result will be of course to throttle the steam passing to the recesses 15 and 16, so as to reduce its'consumption.

It will be evident that my engine is adapted to the use of steam, compressed air, or any proper expansive fluid and that many changes may be made in the mechanical construction or arrangement of the parts without departing from my invention.

It will be evident that various changes may be made by those skilled in the art which may come within the scope of my invention, and I do not, therefore, desire to be limited in every instance to the exact construction herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a rotary engine, a cylinder, a plurality of fluid-admission ports in said cylinder, a rotary piston-carrier, and a plurality of pistons on said carrier, the number of said pistons being greater than that of said admissionports and bodily-movable fluid-actuated rollerabutments arranged for engagement by said pistons.

2. In a rotary engine, a cylinder, two fluidadmission ports at opposite sides of said cylinder, bodily-movable roller-abutments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, a rotary piston-carrier, and pistons not fewer than three in number on said carrier.

3. In a rotary engine, a plurality of cylinders, a plurality of oppositely-disposed fluidadmission ports in each of said cylinders, bodily-movable roller-abutments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, and means for simultaneously opening the ports at opposite sides of each of said cylinders.

4. In a rotary engine, a cylinder, a rotary piston-carrier, a plurality of pistons in said carrier, an admission-port, a bodily-movable roller-abutment interposed between said valve and the piston-carrier to be actuated in one direction by the fluid admitted through said port and in the opposite direction by direct contact therewith of said pistons, and a rotary admission-valve having a plurality of ports corresponding in number to the number of said pistons.

5. In a rotary engine, a cylinder, a rotary piston-carrier, a plurality of pistons in said carrier, a pluralityof fluid-admission ports in said cylinder, bodily movable roller abutments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, a rotary valve controlling each of said admission-ports and provided with a number of ports corresponding to the number of said pistons, and means for alternately opening said valves.

6. In a rotary engine, a' cylinder, a rotary shaft, a piston-carrier on said shaft, pistons on said carrier, fluid-admission ports on opposite sides of said cylinder, bodily-movable roller-abutments disposed opposite said ports to be actuated -in one direction by the piston and in the opposite direction by the fluid, rotary valves controlling said ports, and means exterior of said cylinder whereby the rotation of said shaft is communicated to said valves.

7. In a rotary engine, a cylinder, a substantially polygonal piston-carrier, segmental recesses at the corners of said carrier, and cylindric pistons in said recesses.

8. In a rotary engine, a cylinder, a substantially polygonal piston-carrier, segmental recesses at the corners of said carrier, and antifrictional bearings in said recesses on which said pistons are mounted.

9. In a rotary engine, a cylinder, a rotary piston-carrier in said cylinder, said cylinder being provided with a recess and a fluid-admission port in said recess, a roller-abutment movable in said recess, and antifriction-bearings in said recess adjacent its mouth With which said abutment contacts.

10. A rotary engine, a cylinder, a rotary piston-carrier in said cylinder, said cylinder being provided With a recess and a fluid-admission port in said recess, a roller-abutment movable in said recess, and a valved fluid-admission port connecting said recess and said cylinder.

11. In a rotary engine, a cylinder, a rotary piston-carrier in said cylinder, said cylinder being provided with a recess and a fluid-admission port in said recess, a roller-abutment movable in said recess, a plurality of fluid-admission ports connecting said recess and said cylinder, valves in said last-named ports, and means for alternatively opening and closing said valves.

12. In a rotary engine, a cylinder, a rotary piston-carrier, a piston in said carrier, a fluidadmission port in said cylinder, bodily-movable roller-abutments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, a rotary valve controlling said port, and a rotary cut-ofl sleeve concentric with said valve.

13. In a rotary engine, a cylinder, a rotary piston-carrier in said cylinder, a piston in said carrier, a plurality of fluid-admission ports in said cylinder, bodily movable roller abutments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, a rotary valve controlling each of said admission-ports, a rotary cut-off sleeve concentric With each of said valves, and means for simultaneously rotating said cut-off sleeves.

14:. In a rotary engine, a cylinder, a rotary piston-carrier in said cylinder, a piston in said carrier, a plurality of fluid-admission ports in said cylinder, bodilymovable roller -abut ments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, a rotary valve controlling each of said admission-ports, a rotary cut-off sleeve concentric with each of said valves, and manual means exterior of said cylinder for simultaneously rotating said cut-off sleeves.

15. In a rotary engine, a plurality of cylinders adjacent each other, piston-carriers in said cylinders, pistons in said carriers, a plurality of fluid-ad mission ports in said cylinders, bodily-movable roller-abutments disposed opposite said ports to be actuated in one direction by the piston and in the opposite direction by the fluid, a casing adjacent all of said cylinders and connected therewith, a rotary valve-sleeve in said casing having ports opening into each of said cylinders, a rotary cut-01f sleeve in said casing and concentric with said valve-sleeve also having ports opening into each of said cylinders, a partition in one of said sleeves separating the ports leading into each of said cylinders, and means for the admission of fluid at each side of said partition.

ADAM S. DICKISON.

Witnesses:

GEORGE HEILIG, ERNEST REDFIELD. 

